CVSS: 5.3EPSS: 0%CPEs: 70EXPL: 0CVE-2023-3817 – Excessive time spent checking DH q parameter value
https://notcve.org/view.php?id=CVE-2023-3817
Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. The function DH_check() performs various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A correct q value, if present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if q is larger than p. An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check(). Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the "-check" option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue. A vulnerability was found in OpenSSL. • http://seclists.org/fulldisclosure/2023/Jul/43 http://www.openwall.com/lists/oss-security/2023/07/31/1 http://www.openwall.com/lists/oss-security/2023/09/22/11 http://www.openwall.com/lists/oss-security/2023/09/22/9 http://www.openwall.com/lists/oss-security/2023/11/06/2 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a1eb62c29db6cb5eec707f9338aee00f44e26f5 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=869ad69aadd985c7b8ca6f4e5dd0eb274c9f3644 https: • CWE-834: Excessive Iteration •
CVSS: 5.3EPSS: 0%CPEs: 5EXPL: 0CVE-2023-3446 – Excessive time spent checking DH keys and parameters
https://notcve.org/view.php?id=CVE-2023-3446
Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. The function DH_check() performs various checks on DH parameters. One of those checks confirms that the modulus ('p' parameter) is not too large. Trying to use a very large modulus is slow and OpenSSL will not normally use a modulus which is over 10,000 bits in length. However the DH_check() function checks numerous aspects of the key or parameters that have been supplied. Some of those checks use the supplied modulus value even if it has already been found to be too large. An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulernable to a Denial of Service attack. The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check(). Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the '-check' option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue. • http://www.openwall.com/lists/oss-security/2023/07/19/4 http://www.openwall.com/lists/oss-security/2023/07/19/5 http://www.openwall.com/lists/oss-security/2023/07/19/6 http://www.openwall.com/lists/oss-security/2023/07/31/1 http://www.openwall.com/lists/oss-security/2024/05/16/1 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1fa20cf2f506113c761777127a38bce5068740eb https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8780a896543a654e757db1b9396383f9d • CWE-400: Uncontrolled Resource Consumption CWE-1333: Inefficient Regular Expression Complexity •
CVSS: 5.3EPSS: 0%CPEs: 4EXPL: 0CVE-2023-2975 – AES-SIV implementation ignores empty associated data entries
https://notcve.org/view.php?id=CVE-2023-2975
Issue summary: The AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries which are unauthenticated as a consequence. Impact summary: Applications that use the AES-SIV algorithm and want to authenticate empty data entries as associated data can be mislead by removing adding or reordering such empty entries as these are ignored by the OpenSSL implementation. We are currently unaware of any such applications. The AES-SIV algorithm allows for authentication of multiple associated data entries along with the encryption. To authenticate empty data the application has to call EVP_EncryptUpdate() (or EVP_CipherUpdate()) with NULL pointer as the output buffer and 0 as the input buffer length. The AES-SIV implementation in OpenSSL just returns success for such a call instead of performing the associated data authentication operation. The empty data thus will not be authenticated. As this issue does not affect non-empty associated data authentication and we expect it to be rare for an application to use empty associated data entries this is qualified as Low severity issue. A vulnerability was found in OpenSSL. The AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries, which are unauthenticated as a consequence. • http://www.openwall.com/lists/oss-security/2023/07/15/1 http://www.openwall.com/lists/oss-security/2023/07/19/5 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=00e2f5eea29994d19293ec4e8c8775ba73678598 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a83f0c958811f07e0d11dfc6b5a6a98edfd5bdc https://security.gentoo.org/glsa/202402-08 https://security.netapp.com/advisory/ntap-20230725-0004 https://www.openssl.org/news/secadv/20230714.txt https://access.redhat.com/securi • CWE-287: Improper Authentication •
CVSS: 4.9EPSS: 0%CPEs: 4EXPL: 0CVE-2007-5536
https://notcve.org/view.php?id=CVE-2007-5536
Unspecified vulnerability in OpenSSL before A.00.09.07l on HP-UX B.11.11, B.11.23, and B.11.31 allows local users to cause a denial of service via unspecified vectors. Vulnerabilidad sin especificar en el OpenSSL anterior al A.00.09.07l en el HP-UX B.11.11, B.11.23 y B.11.31 permite a usuarios locales provocar una denegación de servicio a través de vectores sin especificar. • http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01203958 http://osvdb.org/37894 http://secunia.com/advisories/27265 http://www.securityfocus.com/bid/26093 http://www.vupen.com/english/advisories/2007/3526 https://exchange.xforce.ibmcloud.com/vulnerabilities/37231 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5871 •
CVSS: 5.0EPSS: 6%CPEs: 34EXPL: 1CVE-2002-0659 – OpenSSL - ASN.1 Parsing
https://notcve.org/view.php?id=CVE-2002-0659
The ASN1 library in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allows remote attackers to cause a denial of service via invalid encodings. La librería ASN1 de Open SSL 0.9.6d y anterior, y 0.9.7-beta2 y anterior, permite que atacantes remotos provoquen una denegación de servicio por medio de codificaciones inválidas. • https://www.exploit-db.com/exploits/23199 ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.0.txt ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.1.txt ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:33.openssl.asc http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000516 http://rhn.redhat.com/errata/RHSA-2002-160.html http://rhn.redhat.com/errata/RHSA-2002-161.html http://rhn.redhat.com/errata/RHSA-2002-164.html http& •